ZHANG Yifeng is heading into a new chapter of her scientific career.The 39-year-old recently landed a coveted principal investigator （PI） job at the Institute of Neuroscience in Shanghai. There are only 27 PIs on st...ZHANG Yifeng is heading into a new chapter of her scientific career.The 39-year-old recently landed a coveted principal investigator （PI） job at the Institute of Neuroscience in Shanghai. There are only 27 PIs on staff,23 of whom are men and 4are women.It＇s a ratio that differs from when Zhang was in university, where gender ratios in her biology classes tended to be fifty-fifty. ＂Maybe even slightly more women than men,＂ she muses.展开更多
Steganalysis attack is to statistically estimate the embedded watermark in the watermarked multimedia,and the estimated watermark may be destroyed by the attacker.The existing methods of false negative probability,how...Steganalysis attack is to statistically estimate the embedded watermark in the watermarked multimedia,and the estimated watermark may be destroyed by the attacker.The existing methods of false negative probability,however,do not consider the influence of steganalysis attack.This paper proposed the game theory based false negative probability to estimate the impacts of steganalysis attack,as well as unintentional attack.Specifically,game theory was used to model the collision between the embedment and steganalysis attack,and derive the optimal building embedding/attacking strategy.Such optimal playing strategies devote to calculating the attacker destructed watermark,used for calculation of the game theory based false negative probability.The experimental results show that watermark detection reliability measured using our proposed method,in comparison,can better reflect the real scenario in which the embedded watermark undergoes unintentional attack and the attacker using steganalysis attack.This paper provides a foundation for investigating countermeasures of digital watermarking community against steganalysis attack.展开更多
文摘ZHANG Yifeng is heading into a new chapter of her scientific career.The 39-year-old recently landed a coveted principal investigator （PI） job at the Institute of Neuroscience in Shanghai. There are only 27 PIs on staff,23 of whom are men and 4are women.It＇s a ratio that differs from when Zhang was in university, where gender ratios in her biology classes tended to be fifty-fifty. ＂Maybe even slightly more women than men,＂ she muses.
基金supported by the National Natural Science Foundation of China（No. 71020107027） in part by the Doctoral Startup Fundation of Xinjiang University of Finace and Economics
文摘Steganalysis attack is to statistically estimate the embedded watermark in the watermarked multimedia,and the estimated watermark may be destroyed by the attacker.The existing methods of false negative probability,however,do not consider the influence of steganalysis attack.This paper proposed the game theory based false negative probability to estimate the impacts of steganalysis attack,as well as unintentional attack.Specifically,game theory was used to model the collision between the embedment and steganalysis attack,and derive the optimal building embedding/attacking strategy.Such optimal playing strategies devote to calculating the attacker destructed watermark,used for calculation of the game theory based false negative probability.The experimental results show that watermark detection reliability measured using our proposed method,in comparison,can better reflect the real scenario in which the embedded watermark undergoes unintentional attack and the attacker using steganalysis attack.This paper provides a foundation for investigating countermeasures of digital watermarking community against steganalysis attack.
